21001341203 has 2 divisors, whose sum is σ = 21001341204. Its totient is φ = 21001341202.

The previous prime is 21001341197. The next prime is 21001341227. The reversal of 21001341203 is 30214310012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21001341203 - 2¹⁰ = 21001340179 is a prime.

It is not a weakly prime, because it can be changed into another prime (21001341293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500670601 + 10500670602.

It is an arithmetic number, because the mean of its divisors is an integer number (10500670602).

Almost surely, 2^21001341203 is an apocalyptic number.

21001341203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001341203 is an equidigital number, since it uses as much as digits as its factorization.

21001341203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21001341203 its reverse (30214310012), we get a palindrome (51215651215).

The spelling of 21001341203 in words is "twenty-one billion, one million, three hundred forty-one thousand, two hundred three".